SoX is the swiss army knife of sound processing programs. SoX is a command line utility that can convert various formats of computer audio files in to other formats. It can also apply various effects to these sound files during the conversion. As an added bonus, SoX can play and record audio files on several unix-style platforms. SoX is a general purpose sound converter/player/recorder that supports the following formats:

RAW sound data in various data styles

RAW textual sound data

Amiga 8svx files

Apple/SGI AIFF files

SUN .au files

PCM, U-law, A-law, G7xx ADPCM files

mutant DEC .au files

NeXT .snd files

AVR files

CD-R data (music CD format)

CVS and VMS files (continous variable slope)

GSM raw data (with optional library)

Macintosh HCOM files

Amiga MAUD files

MP3 files (with optional external library)

IRCAM SoundFile files

NIST SPHERE files

Turtle beach SampleVision files

Soundtool (DOS) files

Yamaha TX-16W sampler files

Sound Blaster .VOC files

Ogg Vorbis files (with optional external library)

FLAC files (with optional external library)

Dialogic/OKI ADPCM .VOX files

Microsoft .WAV files

PCM, U-law, A-law, MS ADPCM, IMA ADPCM, GSM, RIFX (big endian)

Psion (PDA) Record.app files and A-law .WVE files

Maxis XA Audio files

EA ADPCM (read support only)

Record and Play audio on various Unix platforms.

null file type that reads and writes from/to nothing.

Ok Lets get to converting shall we?sox myfile.mp3 myfile.oggThe above command converts mp3 to ogg which is a cleaner format to use, you can use this command to convert files to any format above by just adding the file extention you want it converted to.Then we can play the ogg file right from the command line and add a lil extra bass :)play myfile.ogg bass +3 More information can be found on SoX on the developer's page here